SH79F3283
134
A/D Converter Electrical Characteristics
(V
DD
= 5V, GND = 0V, T
A
= 25°C, unless otherwise specified)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Condition
Supply Voltage
V
AD
2.5
3
5.5
V
Resolution
N
R
-
12
-
bit
GND
≤
V
AIN
≤
V
REF
A/D Input Voltage
V
AIN
GND
-
V
REF
V
A/D Input Resistor*
R
AIN
2
-
-
M
Ω
V
IN
= 5.0V
Recommended
impedance of analog
voltage source
Z
AIN
-
-
10
k
Ω
A/D conversion current
I
AD
-
1
3
mA ADC module operating, V
DD
= 5.0V
A/D Input current
I
ADIN
-
-
10
µ
A V
DD
= 5.0V
Differential linearity error
D
LE
-
±
1
LSB f
OSC
= 12MHz, V
DD
= 5.0V
Integral linearity error
I
LE
-
-
±
2
LSB f
OSC
= 12MHz, V
DD
= 5.0V
Full scale error
E
F
-
±
1
±
8
LSB f
OSC
= 12MHz, V
DD
= 5.0V
Offset error
E
Z
-
±
0.5
±
8
LSB f
OSC
= 12MHz, V
DD
= 5.0V
Total Absolute error
E
AD
-
-
LSB f
OSC
= 12MHz, V
DD
= 5.0V
Total Conversion time**
T
CON
16
-
-
t
AD
12 bit Resolution, V
DD
= 5.0V, t
AD
= 1
µ
s
Internal reference
V
ADREF
1.225
1.25
1.275
V
±
2%, T
A
= +25°C
Note:
(1) “*” Here the A/D input Resistor is the DC input-resistance of A/D itself.
(2) "**" Recommendations ADC connected signal source resistance of less than10k
Ω
AC Electrical Characteristics
(V
DD
= 2.0V - 5.5V, GND = 0V, T
A
= +25°C, f
OSC
= 12MHz, unless otherwise specified)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Condition
Oscillator start time
T
OSC
-
-
1
s
f
OSC
= 32.768kHz
T
OSC
-
1
2
ms f
OSC
= 12MHz
RESET pulse width
t
RESET
10
-
-
µ
s
WDT RC Frequency
f
WDT
-
2
3
kHz
Frequency Stability
(RC)
|
∆
F|/F
-
-
±1
%
RC oscillator:
|F - 12MHz|/12MHz
(V
DD
= 2.0 - 5.0V, T
A
= +25°C)
-
-
±2
%
RC oscillator:
|F - 12MHz|/12MHz
(V
DD
= 2.0 - 5.0V, T
A
= -40°C - +85°C)
-
-
±2
%
RC oscillator:
|F - 128kHz|/128kHz
(V
DD
= 2.0 - 5.0V,T
A
= 25°C)
